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在岩土体荷载与位移关系曲线划分的基础上,利用新的节理本构模型描述粉质黏土和砂岩在不同正压力(或不同围压)下剪应力(或荷载)与剪应变(或位移)的全过程特征,以试验的方法决定了该本构模型3个物理力学参数,该理论最大的特点是位移可达任意值.利用新的节理本构模型,对岩土体与基桩之间的相互作用力学行为进行模拟,表征了基桩在不同静载荷作用的力学特性.对沪昆客运专线杭长湖南段路基CFG桩进行了数值模拟,结果表明:新的节理本构模型可以表征不同岩土体与CFG桩之间相互作用的力学特性.
Based on the division of the curve of load and displacement, the new joint constitutive model is used to describe the relationship between shear stress (or load) and shear strain (or displacement) of silty clay and sandstone under different positive pressure (or different confining pressure) ) Of the whole process of the characteristics of the test method to determine the constitutive model of the three physical and mechanical parameters, the biggest feature of this theory is the displacement up to any value. Using the new joint constitutive model of rock and soil and pile And the mechanical behavior of pile under different static loads is simulated.The numerical simulation of the CFG pile under embankment in the section of Hanghang Hunan section of Shanghai-Kunming Passenger Dedicated Railway is carried out. The results show that the new joint constitutive model can be characterized Mechanical Properties of Interaction between Different Soil and CFG Piles.